From: Moni Shoua <monis@xxxxxxxxxxxx>
If the input command length is larger than the kernel supports an error
should be returned in case the unsupported bytes are not cleared.
Cc: <stable@xxxxxxxxxxxxxxx> # v4.10
Fixes: 189aba99e700 ("IB/uverbs: Extend modify_qp and support packet pacing")
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
Signed-off-by: Moni Shoua <monis@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leon@xxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index d0202bb176a4..840b24096690 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2074,8 +2074,8 @@ int ib_uverbs_ex_modify_qp(struct ib_uverbs_file *file,
return -EOPNOTSUPP;
if (ucore->inlen > sizeof(cmd)) {
- if (ib_is_udata_cleared(ucore, sizeof(cmd),
- ucore->inlen - sizeof(cmd)))
+ if (!ib_is_udata_cleared(ucore, sizeof(cmd),
+ ucore->inlen - sizeof(cmd)))
return -EOPNOTSUPP;
}
--
2.15.1
--
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